A cooling device includes a heat sink base plate for mounting on a circuit board to absorb waste heat from a heat source, a radiation fin unit consisting of a set of radiation fins, mounted on the heat sink base plate opposite to the circuit board and defining a plurality of heat-dissipation passages between each two adjacent ones of the radiation fins, a cooling fan unit mounted on the radiation fin unit for creating currents of air toward the heat-dissipation passages, a plurality of thermal tubes supported on the heat sink base plate and fastened to the radiation fins. Each radiation fin has first wind guiding wall portions and second wind guiding wall portions respectively tilted in reversed directions to facilitate the flow of air through the heat-dissipation passages.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A cooling device, comprising: a heat sink base plate for mounting on a circuit board to absorb waste heat from a heat source at said circuit board; a radiation fin unit comprising a plurality of radiation fins mounted on said heat sink base plate opposite to said circuit board for dissipating heat; a cooling fan unit mounted on said radiation fin unit for creating currents of air toward said radiation fins; wherein said radiation fins of said radiation fin unit are arranged in parallel, defining a plurality of heat-dissipation passages between each two adjacent ones of said radiation fins, each said radiation fin comprising a plurality of first wind guiding wall portions and second wind guiding wall portions respectively tilted in reversed directions to facilitate the flow of air through said heat-dissipation passages; wherein said cooling fan unit comprises at least one fan bracket fastened to said radiation fins of said radiation fin unit, at least one fan rack respectively fastened to said at least one fan bracket, at least one fan body respectively mounted on said at least one fan rack for creating an axial flow of air toward said heat-dissipation passages, and a fan cover capped on said radiation fin unit over said cooling fan unit, said fan cover defining at least one opening corresponding to one respective fan body of said cooling fan unit.
2. The cooling device as claimed in claim 1 , wherein said radiation fin unit defines at least one fan-accommodation recess at a top side of said radiation fins for accommodating said cooling fan unit above said first wind guiding wall portions and said second wind guiding wall portions of said radiation fins.
3. The cooling device as claimed in claim 1 , wherein each said radiation fin further comprises a plurality of connection portions respectively connected between two opposite lateral sides of each of said first wind guiding wall portions and said second wind guiding wall portions and the respective radiation fin, each said connection portion being selectively made in the form of a triangular strip, opening or groove that increases gradually in width from a bottom side of said radiation fin unit toward a top side thereof.
4. The cooling device as claimed in claim 1 , further comprising a plurality of thermal tubes supported on said heat sink base plate and fastened to said radiation fins of said radiation fin unit, each said radiation fin further comprising a bottom mounting portion disposed at a bottom side thereof and defining a plurality of retaining notches for securing said thermal tubes.
5. A cooling device, comprising: a heat sink base plate for mounting on a circuit board to absorb waste heat from a heat source at said circuit board; a radiation fin unit comprising a plurality of radiation fins mounted on said heat sink base plate opposite to said circuit board for dissipating heat; a cooling fan unit mounted on said radiation fin unit for creating currents of air toward said radiation fins; wherein said radiation fins of said radiation fin unit are arranged in parallel, defining a plurality of heat-dissipation passages between each two adjacent ones of said radiation fins, each said radiation fin comprising a plurality of first wind guiding wall portions and second wind guiding wall portions and a plurality of connection portions, the plurality of first wind guiding wall portions and second wind guiding wall portions being respectively tilted in reversed directions to facilitate the flow of air through said heat-dissipation passages, and the plurality of connection portions being respectively connected between two opposite lateral sides of each of said first wind guiding wall portions and said second wind guiding wall portions and the respective radiation fin, each said connection portion being selectively made in the form of a triangular strip, opening or groove that increases gradually in width from a bottom side of said radiation fin unit toward a top side thereof.
6. The cooling device as claimed in claim 5 , wherein said radiation fin unit defines at least one fan-accommodation recess at a top side of said radiation fins for accommodating said cooling fan unit above said first wind guiding wall portions and said second wind guiding wall portions of said radiation fins.
7. The cooling device as claimed in claim 5 , further comprising a plurality of thermal tubes supported on said heat sink base plate and fastened to said radiation fins of said radiation fin unit, each said radiation fin further comprising a bottom mounting portion disposed at a bottom side thereof and defining a plurality of retaining notches for securing said thermal tubes.
8. The cooling device as claimed in claim 5 , wherein said cooling fan unit comprises at least one fan bracket fastened to said radiation fins of said radiation fin unit, at least one fan rack respectively fastened to said at least one fan bracket, and at least one fan body respectively mounted on said at least one fan rack for creating an axial flow of air toward said heat-dissipation passages.
9. The cooling device as claimed in claim 5 , wherein said cooling fan unit comprises at least one fan rack fastened to said radiation fins of said radiation fin unit, and at least one fan body respectively mounted on said at least one fan rack for creating an axial flow of air toward said heat-dissipation passages.
10. The cooling device as claimed in claim 8 , wherein said cooling fan unit further comprises a fan cover capped on said radiation fin unit over said cooling fan unit, said fan cover defining at least one opening corresponding to one respective fan body of said cooling fan unit.
11. A cooling device, comprising: a heat sink base plate for mounting on a circuit board to absorb waste heat from a heat source at said circuit board; a radiation fin unit comprising a plurality of radiation fins mounted on said heat sink base plate opposite to said circuit board for dissipating heat; a cooling fan unit mounted on said radiation fin unit for creating currents of air toward said radiation fins; and a plurality of thermal tubes supported on said heat sink base plate and fastened to said radiation fins of said radiation fin unit, each said radiation fin further comprising a bottom mounting portion disposed at a bottom side thereof and defining a plurality of retaining notches for securing said thermal tubes, wherein said radiation fins of said radiation fin unit are arranged in parallel, defining a plurality of heat-dissipation passages between each two adjacent ones of said radiation fins, each said radiation fin comprising a plurality of first wind guiding wall portions and second wind guiding wall portions respectively tilted in reversed directions to facilitate the flow of air through said heat-dissipation passages.
12. The cooling device as claimed in claim 11 , wherein said radiation fin unit defines at least one fan-accommodation recess at a top side of said radiation fins for accommodating said cooling fan unit above said first wind guiding wall portions and said second wind guiding wall portions of said radiation fins.
13. The cooling device as claimed in claim 11 , wherein each said radiation fin further comprises a plurality of connection portions respectively connected between two opposite lateral sides of each of said first wind guiding wall portions and said second wind guiding wall portions and the respective radiation fin, each said connection portion being selectively made in the form of a triangular strip, opening or groove that increases gradually in width from a bottom side of said radiation fin unit toward a top side thereof.
14. The cooling device as claimed in claim 11 , wherein said cooling fan unit comprises at least one fan bracket fastened to said radiation fins of said radiation fin unit, at least one fan rack respectively fastened to said at least one fan bracket, and at least one fan body respectively mounted on said at least one fan rack for creating an axial flow of air toward said heat-dissipation passages.
15. The cooling device as claimed in claim 11 , wherein said cooling fan unit comprises at least one fan rack fastened to said radiation fins of said radiation fin unit, and at least one fan body respectively mounted on said at least one fan rack for creating an axial flow of air toward said heat-dissipation passages.
16. The cooling device as claimed in claim 14 , wherein said cooling fan unit further comprises a fan cover capped on said radiation fin unit over said cooling fan unit, said fan cover defining at least one opening corresponding to one respective fan body of said cooling fan unit.
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July 3, 2012
October 7, 2014
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